Laravel provides a robust foundation for implementing authentication and authorization in modern web applications. While authentication determines who a user is, authorization determines what that user is allowed to do.

This guide explains how Laravel developers can implement both concepts using Laravel’s built-in features and recommended patterns.

Authentication vs. Authorization

Authentication and authorization solve two different security problems.

Authentication

Authentication verifies the identity of a user.

For example:

A user enters an email address and password. Laravel verifies the credentials and creates an authenticated session.

Typical authentication features include:

1. User registration
2. Login and logout
3. Password hashing
4. Password reset
5. Email verification
6. Remember-me functionality
7. Session management
8. Multi-factor authentication integrations

Authorization

Authorization determines whether an authenticated user has permission to perform a specific action.

For example:

An administrator can delete users, while a regular user can only update their own profile.

Laravel provides several authorization mechanisms, including:

1. Gates
2. Policies
3. Middleware
4. Role and permission packages
5. Model-based authorization

Laravel Authentication

Laravel applications commonly use Laravel’s authentication ecosystem to handle login, registration, password resets, and related functionality.

Depending on the application requirements, developers can use an authentication starter kit rather than building authentication functionality entirely from scratch.

Authentication typically follows this flow:

User
  ↓
Login Form
  ↓
Credentials Validation
  ↓
Authentication
  ↓
Session Created
  ↓
Authenticated User

For example, a login request may validate the user’s credentials before allowing access to protected resources.

$request->validate([ 
 'email' => ['required', 'email'], 
 'password' => ['required'], 
]);

One of the simplest ways to restrict access to authenticated users is the auth middleware.

Route::get('/dashboard', function () { 
 return view('dashboard'); 
})->middleware('auth');

Laravel Authorization

Once a user has been authenticated, the application may need to determine what that user is allowed to do.

For example, consider an application with these users:

User	Permission
Administrator	Manage all users
Manager	Manage assigned projects
Employee	View assigned projects

Authentication identifies the user, while authorization checks whether the requested operation is permitted.

Laravel provides Gates and Policies for this purpose.

Using Gates

A Gate is useful for defining authorization logic for a specific action.

For example:

Gate::define('delete-user', function ($user, $targetUser) {
    return $user->is_admin;
});

The application can then check whether the current user is authorized:

if (Gate::allows('delete-user', $user)) {
    // Delete user
}

In Blade templates, authorization checks can also be performed:

@can('delete-user', $user)
    <button>Delete User</button>
@endcan

This prevents unauthorized users from seeing actions they cannot perform.

Conclusion

Laravel provides a comprehensive foundation for implementing authentication and authorization.

The key distinction is:

Authentication answers: “Who are you?”

Authorization answers: “What are you allowed to do?”

For most Laravel applications, a good approach is to use authentication middleware to protect private routes, and Gates or Policies to enforce authorization rules.

As an application grows, centralized authorization through Policies and a well-designed role/permission system can significantly improve security, maintainability, and code organization.